Observations of low-energy electrons upstream of the earth's bow shock

Details Observations of low-energy electrons upstream of the earth's bow shock Observations of low-energy electrons upstream of the earth's bow shock

Jan 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975jgr....80..187r&link_type=abstract

Journal of Geophysical Research, vol. 80, Jan. 1, 1975, p. 187-190.

Other

1

Bow Waves, Electron Energy, Electron Flux Density, Interplanetary Magnetic Fields, Shock Wave Propagation, Solar Wind, Electron Counters, Lines Of Force, Plasma Diagnostics, Plasma Potentials

Scientific paper

Observations of electron fluxes with a lunar-based electron spectrometer when the moon was upstream of the earth have shown that a subset of observed fluxes are strongly controlled by the interplanetary magnetic field (IMF) direction. The fluxes occur only when the IMF lines connect back to the earth's bow shock. Observed densities and temperatures were in the ranges 0.002 to 0.004 per cu cm and 1,700,000 to 2,800,000 K. It is shown that these electrons can account for increases in effective solar wind electron temperatures on bow shock connected field lines, which have been observed previously by other investigators. It is further shown that if a model of the bow shock with an electrostatic potential barrier is assumed, the potential can be estimated to be 500 V.

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